US6427787B1 - Drilling motor that operates pursuant to the Moineau principle for drilling deep holes - Google Patents
Drilling motor that operates pursuant to the Moineau principle for drilling deep holes Download PDFInfo
- Publication number
- US6427787B1 US6427787B1 US09/602,752 US60275200A US6427787B1 US 6427787 B1 US6427787 B1 US 6427787B1 US 60275200 A US60275200 A US 60275200A US 6427787 B1 US6427787 B1 US 6427787B1
- Authority
- US
- United States
- Prior art keywords
- end sections
- shell
- drilling motor
- motor according
- lining
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000005553 drilling Methods 0.000 title claims abstract description 35
- 239000013536 elastomeric material Substances 0.000 claims abstract description 3
- 239000000463 material Substances 0.000 description 5
- 239000012530 fluid Substances 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B4/00—Drives for drilling, used in the borehole
- E21B4/02—Fluid rotary type drives
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2/00—Rotary-piston machines or pumps
- F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
- F04C2/10—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member
- F04C2/107—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member with helical teeth
- F04C2/1071—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member with helical teeth the inner and outer member having a different number of threads and one of the two being made of elastic materials, e.g. Moineau type
- F04C2/1073—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member with helical teeth the inner and outer member having a different number of threads and one of the two being made of elastic materials, e.g. Moineau type where one member is stationary while the other member rotates and orbits
- F04C2/1075—Construction of the stationary member
Definitions
- the present invention relates to a drilling motor, such as a downhole drilling motor, that operates pursuant to the Moineau principle for drilling deep holes or wells in the ground.
- a helically extending rotor is disposed within a stator, and the rigid shell of the stator is provided with an inwardly helically extending lining of elastomeric material for receiving the rotor, wherein the shell is provided with essentially cylindrical end sections having a preferably slightly conical inner thread for the securement of connection elements of the drilling motor.
- the shell of the stator is cylindrical on the outside; the outer diameter of the end sections corresponds to the diameter of the portion that is disposed between them and that surrounds the elastomeric lining.
- FIG. 1 is a partially cross-sectioned view through one exemplary embodiment of an inventive stator for a drilling motor for drilling deep holes in the ground;
- FIG. 2 is a modified embodiment of an inventive stator.
- the rigid shell of the stator extends helically in conformity with the inner spiral of the lining such that over the active length of the stator the lining has an at least essentially uniform thickness;
- the rigid shell has a thickness that is less than the thickness of the end sections.
- the rigid shell additionally merges with the end sections via a continuously increasing thickness and in an essentially conical manner.
- the drilling motor that is shown in FIG. 1, and that operates pursuant to the Moineau principle, is provided with a stator 1 that essentially comprises the active central portion 2 and the two end sections 3 .
- the rotor which in a manner known per se is eccentrically mounted, extends beyond the stator 1 at the bottom where via a coupling it drives the drilling tool, and ends in the upper end section of the stator 1 . Since not only the interior 4 of the stator 1 , but also the rotor, are helical on the outside, for example, five spirals for the stator 1 and four spirals for the rotor, the rotor is set into rotation when the pressurized or comprised drilling fluid is supplied in the direction of the arrow 5 . This fluid finally leaves the motor, and is returned in the direction of the arrow 8 in the annular space 6 between the stator 1 and the inner wall 7 of the borehole.
- the end sections 3 are cylindrical on the outside and have a diameter E; they also have a slightly conical inner thread 9 for threading on connection elements, such as a casing.
- the thickness of the end section 3 is indicated by the reference symbol S.
- the end sections 3 merge with the portion 2 via an intermediate portion 10 , which is tapered such that its thickness decreases in a direction toward the portion 2 , i.e. the rigid shell 11 thereof.
- the shell 11 is provided with a lining 12 of rubber or rubber-like material; the lining 12 is preferably adhesively secured, and defines the actual working space of the drilling motor.
- the lining advantageously has the same thickness over the length of the portion 2 .
- the outer diameter Z of the portion 2 is considerably less than the diameter E of the end sections 3 .
- the diameter E is about 10-25 mm greater than the diameter Z.
- the portion 2 also has a comparatively small thickness M.
- the value of the thickness S can be 1.5-3 times greater than the thickness M for the shell 11 .
- the uniform thickness of the lining 12 leads to a savings in material and also to a uniform stressing of the material.
- the small thickness M but also the reduced diameter Z have the great advantage that a large annular space 6 can result in order to be able to correspondingly intensify the return flow.
- the reduction of the thickness also has the advantage that a deformability of cylindrical parts for forming a spiral is considerably facilitated.
- the conical intermediate portion 10 additionally forms, with regard to strength, a favorable transition between the regions of different diameter and different thicknesses.
- a cylindrical portion 13 having a length V is disposed on the end sections 3 between the intermediate portion 10 and the length of the end sections 3 that are provided with the inner thread 9 .
- the cylindrical portion 13 is cylindrical both on the inside as well as on the outside, and at this location defines the thickness S.
- the important thing is that the lining 12 extends approximately over half of the length of the value V and is here, at its conically terminating end, adhesively secured.
- the outer diameter Z is about 85-95% of the value E.
- the dimension M should be about 35-75% of the value S.
Landscapes
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Fluid Mechanics (AREA)
- Environmental & Geological Engineering (AREA)
- Physics & Mathematics (AREA)
- Geochemistry & Mineralogy (AREA)
- General Engineering & Computer Science (AREA)
- Insulation, Fastening Of Motor, Generator Windings (AREA)
- Reciprocating Pumps (AREA)
- Manufacture Of Motors, Generators (AREA)
- Motor Or Generator Frames (AREA)
Abstract
Description
Claims (13)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE29911031U DE29911031U1 (en) | 1999-06-24 | 1999-06-24 | Drilling motor for deep drilling that works according to the Moineau principle |
DE29911031U | 1999-06-24 |
Publications (1)
Publication Number | Publication Date |
---|---|
US6427787B1 true US6427787B1 (en) | 2002-08-06 |
Family
ID=8075240
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US09/602,752 Expired - Lifetime US6427787B1 (en) | 1999-06-24 | 2000-06-23 | Drilling motor that operates pursuant to the Moineau principle for drilling deep holes |
Country Status (3)
Country | Link |
---|---|
US (1) | US6427787B1 (en) |
CA (1) | CA2312589C (en) |
DE (1) | DE29911031U1 (en) |
Cited By (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20050089429A1 (en) * | 2003-10-27 | 2005-04-28 | Dyna-Drill Technologies, Inc. | Composite material progressing cavity stators |
US20050089430A1 (en) * | 2003-10-27 | 2005-04-28 | Dyna-Drill Technologies, Inc. | Asymmetric contouring of elastomer liner on lobes in a Moineau style power section stator |
US20060008203A1 (en) * | 2002-10-23 | 2006-01-12 | Japan Science And Technology Agency | Optical Signal Amplifying Triode And Optical Signal Transfer Method, Optical Signal Relay Device, And Optical Signal Storage Device Using The Same |
US20060153724A1 (en) * | 2005-01-12 | 2006-07-13 | Dyna-Drill Technologies, Inc. | Multiple elastomer layer progressing cavity stators |
US20070011873A1 (en) * | 2005-07-14 | 2007-01-18 | Teale David W | Methods for producing even wall down-hole power sections |
US7442019B2 (en) | 2002-10-21 | 2008-10-28 | Noetic Engineering Inc. | Stator of a moineau-pump |
US20080304991A1 (en) * | 2007-06-05 | 2008-12-11 | Dyna-Drill Technologies, Inc. | Moineu stator including a skeletal reinforcement |
US20080304992A1 (en) * | 2007-06-05 | 2008-12-11 | Dyna-Drill Technologies, Inc. | Braze or solder reinforced moineu stator |
US20100284843A1 (en) * | 2009-05-05 | 2010-11-11 | Jaeger Sebastian | Stator for an eccentric screw pump or an eccentric screw motor and method of producing a stator |
US20110243774A1 (en) * | 2010-03-30 | 2011-10-06 | Smith International, Inc. | Undercut stator for a positive displacment motor |
US9133841B2 (en) | 2013-04-11 | 2015-09-15 | Cameron International Corporation | Progressing cavity stator with metal plates having apertures with englarged ends |
US9416780B2 (en) | 2007-01-24 | 2016-08-16 | Halliburton Energy Services, Inc. | Electroformed stator tube for a progressing cavity apparatus |
US10676992B2 (en) | 2017-03-22 | 2020-06-09 | Infocus Energy Services Inc. | Downhole tools with progressive cavity sections, and related methods of use and assembly |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10245497C5 (en) * | 2002-09-27 | 2009-02-19 | Wilhelm Kächele GmbH Elastomertechnik | Progressive cavity pump with increased temperature range |
DE102014116327A1 (en) * | 2014-11-10 | 2016-05-12 | Netzsch Pumpen & Systeme Gmbh | Method for producing a coiled stator and apparatus for producing a coiled stator |
DE102019005367B4 (en) * | 2019-07-31 | 2023-01-19 | Pumpenfabrik Wangen Gmbh | Method for producing a stator component for an eccentric screw pump, stator component and eccentric screw pump |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5221197A (en) * | 1991-08-08 | 1993-06-22 | Kochnev Anatoly M | Working member of a helical downhole motor for drilling wells |
-
1999
- 1999-06-24 DE DE29911031U patent/DE29911031U1/en not_active Expired - Lifetime
-
2000
- 2000-06-23 US US09/602,752 patent/US6427787B1/en not_active Expired - Lifetime
- 2000-06-27 CA CA002312589A patent/CA2312589C/en not_active Expired - Lifetime
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5221197A (en) * | 1991-08-08 | 1993-06-22 | Kochnev Anatoly M | Working member of a helical downhole motor for drilling wells |
Cited By (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7442019B2 (en) | 2002-10-21 | 2008-10-28 | Noetic Engineering Inc. | Stator of a moineau-pump |
US20060008203A1 (en) * | 2002-10-23 | 2006-01-12 | Japan Science And Technology Agency | Optical Signal Amplifying Triode And Optical Signal Transfer Method, Optical Signal Relay Device, And Optical Signal Storage Device Using The Same |
US20050089430A1 (en) * | 2003-10-27 | 2005-04-28 | Dyna-Drill Technologies, Inc. | Asymmetric contouring of elastomer liner on lobes in a Moineau style power section stator |
US7083401B2 (en) | 2003-10-27 | 2006-08-01 | Dyna-Drill Technologies, Inc. | Asymmetric contouring of elastomer liner on lobes in a Moineau style power section stator |
US20050089429A1 (en) * | 2003-10-27 | 2005-04-28 | Dyna-Drill Technologies, Inc. | Composite material progressing cavity stators |
US7517202B2 (en) | 2005-01-12 | 2009-04-14 | Smith International, Inc. | Multiple elastomer layer progressing cavity stators |
US20060153724A1 (en) * | 2005-01-12 | 2006-07-13 | Dyna-Drill Technologies, Inc. | Multiple elastomer layer progressing cavity stators |
US20090278419A1 (en) * | 2005-07-14 | 2009-11-12 | Teale David W | Methods for producing even wall down-hole power sections |
US20070011873A1 (en) * | 2005-07-14 | 2007-01-18 | Teale David W | Methods for producing even wall down-hole power sections |
US9416780B2 (en) | 2007-01-24 | 2016-08-16 | Halliburton Energy Services, Inc. | Electroformed stator tube for a progressing cavity apparatus |
US8333231B2 (en) | 2007-06-05 | 2012-12-18 | Schlumberger Technology Corporation | Braze or solder reinforced moineu stator |
US20080304991A1 (en) * | 2007-06-05 | 2008-12-11 | Dyna-Drill Technologies, Inc. | Moineu stator including a skeletal reinforcement |
US20080304992A1 (en) * | 2007-06-05 | 2008-12-11 | Dyna-Drill Technologies, Inc. | Braze or solder reinforced moineu stator |
US7878774B2 (en) | 2007-06-05 | 2011-02-01 | Smith International, Inc. | Moineau stator including a skeletal reinforcement |
US7950914B2 (en) | 2007-06-05 | 2011-05-31 | Smith International, Inc. | Braze or solder reinforced Moineau stator |
US20110203110A1 (en) * | 2007-06-05 | 2011-08-25 | Smith International, Inc. | Braze or solder reinforced moineu stator |
US20100284843A1 (en) * | 2009-05-05 | 2010-11-11 | Jaeger Sebastian | Stator for an eccentric screw pump or an eccentric screw motor and method of producing a stator |
US9393648B2 (en) * | 2010-03-30 | 2016-07-19 | Smith International Inc. | Undercut stator for a positive displacment motor |
US20110243774A1 (en) * | 2010-03-30 | 2011-10-06 | Smith International, Inc. | Undercut stator for a positive displacment motor |
US9133841B2 (en) | 2013-04-11 | 2015-09-15 | Cameron International Corporation | Progressing cavity stator with metal plates having apertures with englarged ends |
US10676992B2 (en) | 2017-03-22 | 2020-06-09 | Infocus Energy Services Inc. | Downhole tools with progressive cavity sections, and related methods of use and assembly |
Also Published As
Publication number | Publication date |
---|---|
CA2312589A1 (en) | 2000-12-24 |
DE29911031U1 (en) | 2000-11-23 |
CA2312589C (en) | 2009-05-12 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: ARTEMIS KAUTSCHUK-UND KUNSTSTOFFECHNIK GMBH & CIE, Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:JAGER, SEBASTIAN;REEL/FRAME:010900/0691 Effective date: 20000427 |
|
CC | Certificate of correction | ||
REMI | Maintenance fee reminder mailed | ||
REIN | Reinstatement after maintenance fee payment confirmed | ||
FP | Lapsed due to failure to pay maintenance fee |
Effective date: 20060806 |
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Free format text: REFUND - SURCHARGE, PETITION TO ACCEPT PYMT AFTER EXP, UNINTENTIONAL (ORIGINAL EVENT CODE: R1558); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY Free format text: REFUND - PAYMENT OF MAINTENANCE FEE, 4TH YEAR, LARGE ENTITY (ORIGINAL EVENT CODE: R1551); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY |
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